Layering

Asexual Propagation•Roots are formed on a stem

•root while still attached to the parent plant

Asexual Propagation•the stem or root which is rooted is called a layer

•the layer is removed from the plant only after rooting has taken place

Advantages and Disadvantages•relatively simple•requires more time•requires a lot of work by hand

•fewer plants can be started from each parent plant

Advantages and Disadvantages•usually very successful•some plants layer naturally - raspberry

Simple Layering•a branch from the parent plant is bent to the ground

•covered with soil at one point

•terminal end remains exposed

Air Layering•Ancient Chinese practiced air layering

•process eliminates burying part of the plant in the soil

Air Layering•instead, a part of the stem is girdled

•cut all the way around•the cut is surrounded by moist sphagnum or peat moss

Air Layering•Moss is wrapped with plastic to hold in place

•roots grow from the wound on the stem

Air Layering•Plants that propagate well this way:

•Rubber Tree•Persian Lime•Magnolia

Air Layering•When rooting is complete•4-6 weeks•cut layer BELOW roots and transplant

•Parent portion will continue to grow and form new branches

Trench Layering•parent plant is bent to the ground and covered.

•Shoots arise from buried buds and roots form under soil

Stool or Mound Layering•parent plant is cut back to the soil level

•entire plant is mounded with soil

•forms numerous shoots and roots

Compound Layering•stem is covered by soil at two or more points

•remaining portion is left uncovered

•Stem is girdled at points

Compound Layering•girdled points are buries with soil

•roots grow from the girdled points

•Above ground parts continue to produce leaves and stems